High admittance tympanograms, Left ear, Right ear – Welch Allyn MicroTymp 3 portable tympanometric instrument - User Manual User Manual
Page 34: Tympanogram with low peak ya, Tympanogram with high peak ya
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Interpreting test results
Welch Allyn MicroTymp3 portable tympanometric instrument
Tympanogram with low Peak Ya
Conditions which cause tympanograms with reduced peak height (low Peak Ya):
•
Otitis media with effusion
•
Tympanosclerosis
•
Cholesteatoma
•
Middle ear tumor
See Appendix A for descriptions of low-admittance pathologies: otitis media with effusion,
middle ear tumor, ossicular fixation, and otosclerosis.
High admittance tympanograms
Tympanogram with high Peak Ya
Conditions which cause tympanograms with increased peak height (high Peak Ya):
•
Tympanic membrane abnormalities
•
Ossicular disruption
See Appendix A for a description of tympanic membrane abnormalities and ossicular
disruption.
-400
-200
0
200
2
0.5
0
1.0
1
1.5
PRESSURE - daPa
Ya - mmho
Vea
+200
LEFT EAR
L
Note
When peak admittance exceeds 1.5 mmho, data points will be printed at baseline
(0.0 mmho), as shown above.
-400
-200
0
200
2
0.5
0
1.0
1
1.5
PRESSURE - daPa
Ya - mmho
Vea
+200
RIGHT EAR
R
High Peak Ya